Automotive component, likely a pressure regulator.

Black cylindrical metal component with flanges.

New Brake Master Cylinder 1-3/4-inch bore size FF57571 30077

Name: New Brake Master Cylinder 1-3/4-inch bore size FF57571 30077
Brand: Bexar Pro Componets
SKU: M3646589
Availability: InStock

$260.24

SKU: M3646589 Categories: Brake Master Cylinders, VIEW ALL PRODUCTS Brand: Bexar Pro Componets

New Brake Master Cylinder 1-3/4-inch bore size FF57571 30077

Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry.

Restore your braking system to peak performance with the M3646589 Master Cylinder from Bexar Pro Components. Engineered with a massive 1-3/4-inch bore and high-grade materials, this unit is built for the rugged demands of heavy-duty fleet reliability, making it the ideal solution for both industrial equipment and specialized automotive applications.

Key Specifications & Expert Features

Bore Diameter: 1-3/4-inch bore size (Critical for high-volume hydraulic displacement)
Outlet Size: 1/2-20 INV (Standard inverted flare thread for direct line connection)
Application: Heavy-duty industrial machinery, large-scale fleet vehicles, and specialized performance trucks.
Repair Kit: N/A (Contact us for complete unit replacement recommendations)

Verified Casting & Part Numbers

Matching your existing casting number is the most reliable method to ensure correct fitment. This unit replaces:

FF57571
FE57571
30077

Expert Installation & Field Note

Based on our shop experience specializing in heavy-duty brakes since 1985: The 1-3/4-inch bore is a high-volume specification typical of heavy equipment hydraulic circuits. When installing the M3646589, technical precision regarding pushrod alignment is vital. Side-loading the piston in a bore this size can lead to rapid seal degradation. Ensure your linkage is adjusted to provide a full, square stroke and always perform a complete system bleed to remove all air from the oversized galleries.

⚠ CRITICAL: Verify Specifications

To ensure safety, verify that this master cylinder’s 1-3/4-inch bore size and 1/2-20 INV outlet match your existing unit exactly before purchasing. Proper displacement is essential for automotive and industrial safety.